Had some time, did the thing. Only took three years.

Three years ago, one of my first comments earned the distinction of being top comment. Yeah, with 312 points. Times have changed, eh? I really meant to try it, but could never find an appropriate screw.
Edit: Original post here: http://imgur.com/gallery/eeMFm
Another edit: My comment now has 550 points and the original post has plummeted from 448 points to 248 points. You guys are nutty. :-)

A few months ago, someone browsing random called me out. I was in the middle of a renovation; maybe I'd luck out!
Edit: Link to that weird post: http://imgur.com/gallery/zL0Cq2n

I did. My stupid ex-tenant did an amazingly shitty job installing some shelves. After I tore them all out, this little bastard was left over. It was 6 feet off the floor (for you Europeans that's about 18 decimeters) making it hard to get leverage and I don't know what was behind the plaster, but it would not budge. "Now is the time!" I realized, because I'm always thinking of Imgur. Always. Also, this picture zooms in case you need to Enhance. I was going to crop it but I didn't.
EDIT: I'm getting a *lot* of comments suggesting this is a Robertson screw, not a Phillips. I could mention that I worked in the Theater building sets and doing carpentry and renovating homes/apartments for many years to convince you that it's really a Phillips. I could also present the facts: the opening is square because this Phillips screw is so damn stripped that most of the metal making the signature plus sign is gone. The cavity now resembles an inverted pyramid. There was still a slight amount of purchase for a Phillips bit, but not much. A Robbie bit would barely breach the opening. Also, in the states, it's a very rare type of screw. Also all the other screws were Phillips. It's not a Robertson screw.

I secured a rubber band and used a screwdriver with fresh bit. Tried with a Phillips #2 and #1 just to be sure. I could not get it to budge. I tried repeatedly, chewing up the rubber band in several spots.

I stood on this ladder. It's really far back from the wall so I could leverage as much weight as possible to try to turn it with no success whatsoever. If this is supposed to be a simple life hack, it added no simplicity for the removal.

See how many times I tried? All I did was ruin a perfectly good rubber band.

If you have any exposed head on a screw that you can't turn, Vise Grips are the best way to go. I got that bitch out in 5 seconds without destroying any rubber bands.